hotter plugs on hopped rebuild
Len Sabatine
sabatine at epix.net
Sat Jul 29 14:53:22 GMT 2000
If your'e into worrying about heat range , stick with the 43s , want to
open gap to let's say
.045 , use 2x platinums to minimize erosion, spiral core wire set helps
deliver more of the
spark that's been generated ,to the plug as well. If you want to get
serious about Engine
tuning , get into "reading" the spark plug color and watch for pepper on
the insulator.
Defaulting to O2 mv readings as a tuning tool can get you into trouble
post haste.
The art of reading plugs is the ONLY way to ascertain what's going on in the
combustion chamber, a dead plug beat's detonation, hands down.
Smokey Yunick once said , "If some one wins a race with a pile of dog
crap on their
hood , next week , everyone will have dog crap on their hoods." quote ,
unquote.
Len
>I just had my LO5 TBI350 truck motor rebuilt. It was bored 30 over and now
>has a cam with 204/214 duration, 420/440 lift and separation of 110. The AC
>Delco book list a plug of CR43TS with a gap of .035. I am wondering if
>moving to a CR45TS and widening the gap would be beneficial. .035 seems
>awfully tight for a HEI ignition. Anyone see a problem with the hotter plug?
>
>Paul Washburn
>lpwcruzr at netzero.net
>
>
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